/* 上传图片预览弹出层 */
if (typeof isloaded == 'undefined') {
    $(function(){
        $(window).resize(function(){
            var winW = $(window).width();
            var winH = $(window).height();
            $(document).delegate('.upload-pre-item img', 'click', function() {
                //如果没有图片则不显示
                if($(this).attr('src') === undefined){
                    return false;
                }
                // 创建弹出框以及获取弹出图片
                var imgPopup = "<div class=\"uploadback\"><div id=\"uploadPop\" class=\"upload-img-popup\"></div></div>"
                var imgItem = $(this).parent().html();

                //如果弹出层存在，则不能再弹出
                var popupLen = $(".uploadback").length;
                if( popupLen < 1 ) {
                    $(imgPopup).appendTo("body");
                    $(".upload-img-popup").append($(this).parent().clone());
                    var $_a = $("<a class=\"close-pop\" href=\"javascript:;\" title=\"关闭\"></a>");
                    $(".upload-img-popup").append($_a);
                }

                // 弹出层定位
                var uploadImg = $("#uploadPop").find("img");
                var popW = uploadImg.width();
                var popH = uploadImg.height();
                $(".upload-img-popup").css({
                    // "max-width" : winW * 0.9,
                    "left": '50%',
                    "top": '50%',
                    "margin-left": -popW/2-10,
                    "margin-top": -popH/2-10,
                });
            });

            // 关闭弹出层
            $("body").on("click", "#uploadPop .upload-pre-item  , .uploadback", function(){
                $(".uploadback").remove();
            });
        }).resize();
    })
};
var isloaded = true;
